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The Citroen C4 Picasso is a small family car/compact SUV with some truly innovative features. It has decent space for five people and is an excellent way to get around town.

Sometimes, a keyfob may stop working due to pairing issues. If you follow the steps correctly, this problem can be easily fixed. However, a professional with special equipment is required for specific makes of vehicles.

Dead coin battery

The most common problem with remote key fobs is the battery being dead. However, there is a simple solution. All you have to do is replace the battery on your coin. The batteries look like small silver coins, and are available at your local automotive store. After replacing the battery, then you'll be capable of locking and unlocking your car.

Interference is another reason that your key fob won't function. This can occur due to many factors, such as objects, weather conditions, or other transmitters on the same frequency. If this happens, it might be necessary to take the key from the ignition and try again.

The key fob's deprogramming could also be the cause of the key's inability to function. This could occur in the event that the key was exposed to water, or if the battery isn't removed properly after the key is replaced. You can usually fix the programming by following the directions in the owner's manual. If you are unable to do it do it, you can ask a dealer or professional locksmith to do it for you.

Water damage

Citroen C4 has a high level of reliability, however it's still a complicated machine with hundreds of interconnected components. Like any other car it can experience occasional breakdowns from time time. In some cases the problem can be fixed easily. But in others, you might need to see a mechanic or contact a professional for assistance. The most frequent reasons the C4's key fob stops working include a dead coin battery signal interference, water damage and issues with the receiver module.

Water damage can be caused by sweat or moisture on the key fob's circuit board. The circuit can be damaged and result in a dead keyfob or battery drain. Keep your key fob out of the water and put it in the plastic bag.

A multimeter can be used to check the voltage of your battery. A successful test will yield values between 12 and 13. If your battery isn't producing these values, it could be defective. This means you'll need to replace the battery.

The receiver module is not working properly.

A faulty receiver can cause the keyfob to stop working. This is a typical issue for Citroen owners, as the key fob is required to send a signal through the door handle to open and start the car. If the key fob is unable to transmit this signal, it will not function and will need to be replaced. This can be carried out at a dealership for vehicles or by an expert mechanic.

There are many different things that can go wrong with your Citroen C4 key fob. These include a dead battery water damage, signal interference or a malfunctioning electronic chip. To begin troubleshooting the issue, test the batteries on the key fob and look for any obvious signs. This can be done by opening the key fob and removing the battery to get a better view.

Replace the battery if depleted. Make sure the new one has the same voltage, size and specifications. Also, ensure that the fob is securely connected prior to replacing it.

A faulty 12 Volt battery

A majority of modern cars come with key fobs that let you to lock and unlock the vehicle from a distance. These devices transmit a signal to the car to control the locks and use battery power to operate. Batteries can degrade over time. The good news is that the replacement battery is affordable and easy to install. You can use a flat-blade screwdriver to pry open the battery or the owner's manual may have instructions on how to do it.

Replace the battery by using a different one of the same size and type as the original. Different batteries may have different voltages, which could cause your fob to stop functioning or display a low-battery message. Be sure to position the battery in such a way that the plus and negative signs match the original orientation. This will ensure that the chip receives the correct signals. In other cases, the issue could result from a malfunctioning receiver module. In this instance you should consult your dealer for additional diagnostics and repairs.

Unpaired key requiring programming

The car key remote can stop working due to a number of reasons. Fortunately, the majority of these problems can be corrected quickly and easily. The most frequent cause is a dead coin battery, which can be replaced in a few minutes at the majority of auto parts stores. But, it's crucial to make sure that the new battery is properly installed. Metal retaining clips need to be tightened correctly and the battery contacts should be clean.

A faulty receiver module, or signal interference, is a different possibility. If the key fob is not receiving a strong enough signal from the receiver, it might not lock or unlock doors or start the car, or use the hands-free function. In these cases, you should try to reset the receiver by disconnection of the battery for a few minutes.

Smart keys are more expensive and could cost as much as $500 to replace. They are equipped with an electronic security device that disables the immobiliser of your car. To avoid these costly costs, it's a good idea to have at minimum two working keys for your C4. The replacement remote key fob has been refurbished and tested with new internal components before it is sent to you.